Shuttle-lock for looms.



PATENTED MAR. 29, 1904.

F. A'.'MILLS. SHUTTLE LOCK FOR LOOMS.

'APPLIOATIOF IILED FEB. 10, 1903.

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PATENTED' MAR. 29, 1,904.

P. A. MILLS. SHUTTLE LOOK FORLOOMS.

' APPLIUA'IION FILED FEB. 10, 1903.

2 SHEETS-SHEET 2.

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UNITED STATES Patented March 29, 1904.

PATENT OFFICE.

FRANCIS ARTHUR MILLS, oE LAWRENCE, MASSACHUSETTS, ASSieNoR oE ONE-HALF TO GROSVENQR B. EMMONS, or METHUEN, MASSA- CHUSETTS.

SHUTTLE- LOCK FOR LOOIVIS- SPECIFICATION forming part of Letters Patent No. 755,910, dated March 29, 1904.

Application filed February 10, 1903. Serial No. 142,707. (No model.)

To all whom it may concern.-

Be it known that I, FRANCIS ARTHUR MILLS, a citizen of the United States, residing at Lawrence, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Shuttle-Locks for Looms,

of which the followingis a specification.

My present invention is directed to improvements in the shuttle-lock for which a patent was granted to me August 5, 1902, No. 706,190, and wherein a lever device is employed in cooperation with the shuttle-binder. The impact of the shuttle upon the picker and the picker or picker-stick upon a strap is caused to actuate the binder to lock the shuttle by the pressure thereon of a lever to cause the Shuttle to be locked simultaneously with the impact of the picker or picker-stick upon the strap caused by the impact of the shuttle; and the purpose of mysaid improvement is to render the pressure of the lever device upon the binder more effective upon the shuttle under the impact of the shuttle upon the picker, whereby the locking of the shuttle is rendered certain at a determined point in the shuttle-box. For this purpose my improvement is designed to be used with magazine- I loomsas, for instance, the Northrop patent of November 27, 1894, No. 529,940-having provision for the automatic transfer of the bobbins from a magazine to a shuttle in the shuttle-box, wherein'the shuttle must be stopped at a certain point in the shuttle-box to receive the transferred bobbin from the magazine. For this purpose I have designed a compound lever device which is caused to act by impact and pressure upon the binder to press it hard upon the shuttle with compound leverage-pressure, the effect of which is to more certainly stop and hold the shuttle at the determined point in the shuttle-box. I have also devised a novel means for adjusting the impact strap or band to compensate for the wearing of the picker which is caused by the impact thereon of the point of the shuttle, so that as the hole is deepened in the picker the strapis adjusted to take up the wear, and

the wearing of the picker is thereby prevented from interfering with the stopping of the shuttle at the determined point.

The following description,-read in connection with the accompanying drawings, will enable any person skilled in the art to which my invention relates to understand its nature and to practice it in the form in which 1 prefer to employ it; but -it will be understood that my invention is not limited to the precise form, construction, and arrangement of the compound lever members herein illustrated and described, as they may be differently arranged to suit different construction of looms and to avoid interfering parts thereof; but in any arrangement the compound pressure of the lever membersupon the binder is the essential matter of my improvement;

Referring to the drawings, Figure 1 shows in top view the left end of the race-lay of a loom, the shuttle-box, the shuttle-binder, and one form of lever members for producing compound pressure upon the binder under the impact of the shuttle upon the picker, the shuttle being shown in position entering the box and engaging the shuttle-binder. Fig. 2 is an identical view, the shuttle being at the limit of its throw in delivering its impact upon the picker'and the compound lever members in the positions they assume in applying the force of such impact upon the compound levers and thence upon the binder to stop and hold the shuttle. Fig. 3 is a side view of the compound lever members of the shuttle lock device. Fig. 4: is an end view of the lay, showing the adjustable stud of the impact-strap. Fig. 4? is a side View, and Fig. 5., is an'end view, of the Strap-bracket-and post. 'Fig. 6 is a top view of the right end of the race-lay, showing the compound lever members arranged to suit certain operating parts of the loom that would prevent the arrangement of the levers as shown in- Fig. 1. Fig. 7 is a side view of the right end ofthe race-lay, Showing the'compound lever members arranged partly at the side of the Shuttle-box and partly beneath the race-lay in looms in which such an arrangement would be necessary to avoid certain operating parts and which would not admit of the other arrangements.

In the drawings I have only shown so much of the race-lay of a loom as illustrates the application of my compound-lever shuttle-lock thereto and wherein the shuttle race lay 1 has the usual slot 2 for the picker-stick 3, the shuttle -box 4, and the binder 5, pivotally mounted in the shuttle-box in the well-known way. The shuttle-binder is pivoted to form one side of the shuttle-box, and this may be at either the front or the rear side of the lay; but at whichever side the binder is actuated by the impact of the shuttle upon the picker 6 and the latter upon a strap 7, crossing the path of the movement of the picker to receive the impact of the picker-stick and having one end connected to a post 8 on one side of the lay, the other end of the strap connected to one of the compound lever members 9 on the other side of the lay, so that the picker or picker-stick is driven by the shuttle against the strap which operates the compound lever device. In my said patent the shuttle-lock is effected by a single lever having one arm connected to the impact-strap, and the other arm is in free contact with the free end of the shuttlebinder. .In this arrangementthe pressure of the lever on the binder does not materially exceed the pulling force of the strap at its connection with the lever under the impact of the shuttle, and the purpose of my present improvement is to increase this pressure on the binder with the same pulling force upon the impactstrap, and to effect this object I employ an independent lever 10 for the shuttle-binder to give compound leverage by its cooperation with the strap-lever. In this compound leverage the members are fulcrumed upon a plate attached to the lay or shuttle-box, so that the arm of one lever has free bearing upon the free end of the binder. Another member of the compound levers is connected with one end of the impact-strap. The other free end of said lever has connection with the free end of the binder-lever. In this relation of these lever members when the strap is under the impact of the shuttle it will cause its connected lever 9 to press upon the binderconnected lever 10, and thereby cause the binder to press upon the shuttle with a compound leverage-pressure, and in this way the shuttle is gradually stopped and always held at the determined point in the shuttle-box. In this relation of the leverage members to obtain the full advantage of the compound pressure the lever arms are of unequal lengthas, for instance, the arm 11 of the lever 9, which connects the impact-strapfis longer than the other arm 12 of said lever, while the arm 13 of the binder-lever, that connects the shorter arm 12 of the strap-lever, is

longer than the arm 14, which bears upon the binder; but the relative lengths of the leverarms may be changed so long as they effect the same result. By the cooperation of these lever members the pressure upon the binder will be considerably greater than the pulling force of the strap at its connection with the lever, and this gives the increased leverage pressure upon the shuttle. The impact strap or band is made adjustable to compensate for the wearing of the picker, which is caused by the impact of the shuttle point upon the picker, so that the wearing of the hole in the picker will not interfere with the stopping of the shuttle at the determined point in the shuttle box. This provision consists of a bracket 15, fixed on the side of the lay, having a slot 16 in an arm 17, standing obliquely from one end of the lay toward the other, and a nutted post 8, adjustably mounted in said slot and to which the end of the strap is fixed, so that by setting the post farther from or nearer to the lay will set the strap to the stopping-point of the shuttle and take up all wear of the picker to keep in accord with this stopping-point for the shuttle.

It is important to set the arm 14 of the lever 10 so that it will bear upon the binder to give it a true bearing upon the shuttle and prevent the binder from binding in the side opening in the shuttle-box, and for this purpose I prefer to fulcrum by studs the compound levers in a plate 19, Fig. 3, which is pivoted at its outer end to the side of the lay by the bolt 20,

the other end of the plate having a slot 21,

through which a bolt 22 passes and on which this end of the plate may be raised and lowered to set the lever 14 to give a true bearing on the free end of the binder. I have shown the compound levers having different arrangements on the race-lay because of the structures of the shuttle-boxes. The construction of the frames and certain other parts differ in dilferent looms.

In such cases where the shuttle-boxes will prevent the arrangement of the impact-strap and the compound levers, as in Fig. 1, the strap and its connected lever-arm are arranged beneath the lay, as in Fig. 7, while the lever arrangement shown in Fig. 6 is to avoid the difficulties of driving-pulleys being in the way. My compound lever members as a shuttlelocking device is adapted for attachment to different looms in use and will have the same relation with each other for producing compound pressure upon the binder.

It is important to prevent the stretching of the leather impact-strap, and for this purpose a thin metal strap 23 is riveted at its ends to the outer side as a reinforcing-support positively holding the strap to its original length, so that there can be no cause to change thedetermined point at which the shuttle must stop but the wearing of hole in the picker, and having provided for this the compound leverage insures the perfect shuttle-lock at the point at which the lock must be made efiective.

I believe myself to be the first to provide adjustable means to take up the wear of a picker to cause the shuttle to be stopped at a determined position in the shuttle-box for the purpose stated, the first to provide compound levers for locking the shuttle at such point for the purpose stated, and to prevent the stretching of the impact-strap.

It is important to note that the adjustment of the strap causes pressure upon the binder through a lever that has no connection with the strap, and thereby renders the pressure on the binder more quickly and more eflective and exactly adapted for a compound leverage pressure on the binder for locking the shuttle at the point desired in the shuttle-box. It is this lever member having no fixed connections at its ends that renders it sensitive and active in transmitting the pressure of the impact upon the strap by the strap-connected lever to the lever, which by a sharp quick blow imparts the pressure to the binder to stop the shuttle at the point for which it is set by adjustment. It will also be noted that the strap has no yielding connections and that the adjusting device is movable on the lay, so that when this device is set it firmly holds the strap taut, so that the impact of the shuttle upon the picker will cause the binder to be quickly pressed against the side of the shuttle with a force to check and hold it until the shuttle is again thrown.

I claim 1. In a loom and in combination, a shuttle boX and binder and a picker and picker-stick, means for causing a shuttle-binder to lock the shuttle consisting of an impact-strap and le vers one having connection with and actuated by the impact-strap, another lever having a bearing upon the shuttle-binder, the impactstrap lever and the binder-lever having a connection to cause compound pressure upon the shuttle-binder and the binder upon the shuttle.

2. In aloom and in combination, a shuttleboX, a picker and picker-stick, a binder for the shuttle, and an impact strap or band having one end connected to the lay, a lever having a long and a short arm the former connected to the other end of the impact-strap, a second lever having a long arm connected to a short arm of the strap-lever and having a short-arm connection with the free end of the shuttlebinder, whereby to cause a compound pressure upon the shuttle.

3. In a loom and in combination, a shuttleboX a binder and an impact-strap, and a picker and pickerstick, lever members, one lever having connection with and actuated by the impact-strap, another lever having a bearing upon the free end of the shuttle-binder, the impact-strap lever and the binder-lever having a connection to cause compound pressure upon the shuttle-binder and means for adjusting the binder-lever in its bearing relation to the free end of the binder.

4:. In a loom and in combination a shuttlebox, a binder and an impact-strap, and a picker and picker-stick, lever members, one lever having connection with and actuated by the impact-strap, another lever having a bearing upon the free end of the shuttle-binder, the impact-strap lever and the binder-lever having a connection to cause compound pressure upon the shuttle-binder, a plate on which said levers are fulcrumed pivoted at one end to the lay, the other end of said plate havingaslot, and bolt passing through said slot for adjusting and fastening the slotted end of said plate to set the end of the binder-lever in proper relation thereto.

5. In a loom and in combination, a shuttlebox, a picker and picker-stick, and a binder, an impact strap or band having one end connected to the lay, a lever connected to the other end of the strap, a lever connected to the strapconnected lever and having connection with the free end of the shuttle-binder and means for compensating for the wear of the picker consisting of a bracket having a slotted support, a nutted post fastened in said slot, and

to which the other end of the strap is fastened. 6. In a loom and in combination with the shuttle-binder and a picker and picker-stick, a

strap to receive the impact of the picker, lever members pivoted on the lay one of said members connected to the strap, the other having no connection at its ends, but arranged to transmit the pressure caused by the impact upon the strap to the binder, and an adjusting device movable on the lay for connecting the other end of the strap, whereby to take up the wear caused in the picker by the shuttle-point.

7 In a loom and in combination, ashuttlebinder, and a picker and picker-stick, astrap to receive the impact of the picker, a pair of levers one of which is the binder-pressing lever and the other connected to the strap and overhangs the free end of the binder-lever, and an adjusting device movable on the lay, connecting the other end of the strap, whereby to regulate the pressure of the binder-lever for locking the shuttle at the desired point.

In testimony whereof I afiix my signature in presence of two witnesses. V

FRANCIS ARTHUR MILLS. Witnesses:

A. E. H. J OHNSON, GUY H. JOHNSON. 

